The US dollar rose to a seven-week high on Friday, September 18, 2026, as traders raised their bets on another interest rate hike from the Federal Reserve later this year. The move gave the greenback fresh strength against several major currencies and added pressure to the wider forex market.
The DXY Dollar Index reached 100.448, its highest level in seven weeks. The index tracks the value of the US dollar against a group of major currencies, with the euro carrying the largest weight.
The rise came after a major change in US rate expectations. Markets now see a stronger chance that the Federal Reserve could raise rates again at its October meeting. That view has helped push US yields higher and has made the dollar more attractive to investors.
Markets See a 53% Chance of an October Hike
One of the main drivers of the dollar move is the latest shift in rate expectations. According to CME pricing cited by FXStreet, markets now assign about a 53% probability of an October Fed rate hike.
That figure matters because forex prices react fast to changes in expected interest rates. If traders expect US rates to stay high or rise further, demand for US assets can increase. Higher demand for those assets can also support the dollar.
The 53% figure means the market does not have a clear view that another hike will happen. It is close to an even split. Still, the change in expectations has been enough to give the dollar a boost.
Traders now have to assess new US economic data, comments from Fed officials and changes in bond yields before the October meeting. Each fresh piece of information could change the rate outlook.
The Fed Has Already Raised Rates
The latest dollar strength also comes after the Federal Reserve raised its policy rate by 25 basis points to a range of 3.75% to 4.00%. This was the first US rate hike since July 2023.
A 25-basis-point move means the rate rose by 0.25 percentage points. While the size of the move was modest, its timing was important for global markets.
For much of the past few years, investors had focused on the possibility of lower US rates. That view helped limit dollar strength at various points. The latest policy shift has changed part of that outlook.
The Federal Reserve now faces a different set of choices. If price pressure stays high, another hike could help slow demand. But higher rates can also place more pressure on households, businesses and financial markets.
That balance will be important for the dollar over the next few weeks.
US Yields Give the Dollar More Support
US Treasury yields have also played a major role in the dollar’s rise. When US bond yields move higher, dollar assets can become more attractive compared with assets in countries where interest rates are lower.
The latest change in Fed expectations has therefore affected both the bond market and the currency market.
The relationship is simple. If traders expect US interest rates to remain high, they may expect US Treasury yields to stay firm as well. That can increase demand for the dollar.
This effect is especially important against currencies from countries with lower interest rates or softer rate outlooks. It can create a wider gap between the expected returns from US assets and assets in other major economies.
DXY Moves Above 100
The DXY reached 100.448 on Friday. The move above the 100 level is notable because traders often pay close attention to large round numbers.
The index had faced pressure earlier in the year as markets had expected easier US monetary policy. The latest rise shows how quickly that view can change when rate expectations move in the opposite direction.
The DXY is not a direct measure of the US dollar against every currency. It mainly reflects the dollar’s value against six major currencies. The euro has the largest share in the index, followed by the Japanese yen, British pound, Canadian dollar, Swedish krona and Swiss franc.
As a result, a strong move in the euro or yen can have a large effect on the index.
Yen Weakness Adds to Dollar Strength
The Japanese yen has been one of the biggest factors behind the dollar’s rise this week.
The Bank of Japan raised its policy rate by 25 basis points to 1.25% on Friday. The decision took Japan’s policy rate to its highest level since 1995. Yet the yen fell after the announcement.
USD/JPY moved as high as 157.84, with the dollar up about 1.2% against the yen.
The yen’s fall may seem unusual after a Japanese rate hike. However, the market had already expected the move. Traders instead focused on the details of the decision and the outlook for future policy.
Two BOJ policymakers voted against the rate increase. The 7-2 vote raised doubts about how quickly Japan could raise rates again.
This helped the dollar gain more ground against the yen and also supported the broader DXY index.
Euro Faces Pressure From the Dollar
The euro has also faced pressure as the US rate outlook has improved.
EUR/USD traded near 1.1480, with the pair still close to its recent lows. Earlier on Friday, the euro received some support as US Treasury yields and oil prices moved lower. That support, however, did not fully offset the broader dollar strength.
The euro area also has a different rate outlook from the United States. If traders expect the gap between US and euro-area rates to remain wide, the dollar can gain an advantage.
This does not mean the euro must fall every day. Currency markets can change quickly when economic data, central-bank comments or geopolitical events alter expectations.
For now, US rate expectations remain a key factor for EUR/USD.
Pound Also Remains Under Pressure
The British pound has faced a similar challenge.
GBP/USD traded near 1.335-1.338 after a difficult week for sterling. The Bank of England kept its interest rate at 3.75%, while its latest message suggested that another rate hike was becoming more likely.
The pound therefore has some support from the possibility of tighter UK policy. Yet the US rate outlook remains important for the pair.
If markets expect US rates to rise while the UK rate outlook remains less certain, the dollar can gain against sterling.
The next major move in GBP/USD will depend on fresh UK economic data, US data and the two central banks’ policy signals.
What Traders Will Watch Next
The biggest question for the dollar is whether the current rise can continue.
The 53% market probability of an October Fed hike is not a guarantee. It can change before the meeting. A weaker US inflation report, softer economic data or a more cautious message from Fed officials could reduce the chance of another hike.
On the other hand, strong economic data or persistent price pressure could push rate expectations higher.
The next few weeks may therefore remain important for the dollar. Traders will watch US inflation, jobs data, economic growth figures, Treasury yields and statements from Federal Reserve officials.
The dollar’s move also depends on what other central banks do. A faster rate path in Japan, the euro area or the UK could reduce the gap between US rates and foreign rates.
Why the Dollar Story Matters for Forex
The dollar sits at the center of the global currency market. A move in the greenback can affect major pairs, emerging-market currencies, commodities and international trade.
The current market picture is shaped by a simple theme: US rates may stay higher for longer than traders had expected.
The DXY’s rise to 100.448 reflects that change in expectations. The roughly 53% probability of an October Fed hike shows that traders are now taking another increase seriously.
At the same time, the yen’s fall after the BOJ rate hike has added another source of dollar strength.
The picture could still change. A 53% probability is not certainty, and central banks can alter their plans when new data arrives. For now, though, the US dollar has a clear source of support from higher US rate expectations and a fresh rise in Treasury yields.
Friday’s move is therefore less about one single Fed decision and more about a wider change in how markets view the path of US monetary policy.
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